Firefox 2.0 wtf

I closed my browser, came back 5 mins later and suddenly theres some new user license agreement for firefox. If I scroll through it and click 'I accept the terms etc' then click OK nothing happens. I'm stuck on this screen and can't use firefox. Wtf?

FF 2.0 sucks sadly. It's no better than 1.0, i think 1.5 was the best. lol